Hollow place in rock made when an organism died and was buried and holes in the rock let air or water reach it and dissolve the organism

Which statement describes the formation of a nebula? A. An elliptical flattened disk begins. B. A bulging core with irregular stars around it forms. C. A large flattened core at the center contracts. D. Gases from a dead star gather and contract.

What kind of tide happens during a full and new moon? explain

Marcia ran at a speed of 3.50 meters per second. How fast was she running in kilometers per hour?

What is weightlessness?

Factor on which quantity of heat depend

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 56 rad/s.

The smallest units of matter that normally cannot be broken down are

What relationship exists between the amplitude of a wave and amount of disturbance in the water?

If the speed of the wave on the guitar string is 600 m/s. Determine the period of that wave. Show all of your work including the initial equations and include the units in your answer

A bumper car with a mass of 200 kilograms traveling at a velocity of 3.5 meters/second collides with a stationary bumper car with a mass of 250 kilograms. If the two bumper cars stick and move together at a velocity of 2.